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In Situ Growth of MoS2 Nanosheet Arrays and TS2 (T = Fe, Co, and Ni) Nanocubes onto Molybdate for Efficient Oxygen Evolution Reaction and Improved Hydrogen Evolution Reaction
journal contribution
posted on 2018-01-16, 18:51 authored by Jianghao Wang, Liping Li, Liping Wang, Yifeng Liu, Wengang Sun, Wenwen Li, Guangshe LiRationally
designing efficient and low-price bifunctional electrocatalysts
for oxygen evolution reaction (OER) and hydrogen evolution reaction
(HER) are vitally important to bring solar/electrical-to-hydrogen
energy conversion processes into reality. Herein, we report on a synthetic
method that leads to an in situ growth of ultrathin MoS2 nanosheets and transition metal disulfide nanocubes onto the surface
of Fe1/3Co1/3Ni1/3MoO4 nanorods for the first time. Such hybrids are found to serve as
a bifunctional electrocatalyst with high activities for OER and HER,
as represented by an impressive anodic and cathodic current density
of 10 mA cm–2 at 1.53 and −0.25 V, respectively.
More importantly, the performance for OER is even better than that
of IrO2, the conventional noble metal electrocatalyst.
These striking observations were interpreted in terms of the combination
of strongly synergistic effect of multimetal components, large amount
of exposed active site, and superaerophobia. The present methodology
has been confirmed universal for synthesizing other molybdate solid
solutions, which would open up new possibilities for designing novel
non-noble bifunctional electrocatalysts for OER and HER.
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Keywords
metal electrocatalystbifunctional electrocatalystHydrogen Evolution Reaction RationallySuch hybridsTS 2Efficient Oxygen Evolution Reactionnovel non-noble bifunctional electrocatalystshydrogen evolution reactionNimultimetal componentsoxygen evolution reactionIrO 2Situ GrowthFeHERtransition metal disulfide nanocubesultrathin MoS 2 nanosheetsCoOERMoS 2 Nanosheet Arraysbifunctional electrocatalysts
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